Two massive objects move towards each other because of gravitational attraction. If the gravitational force between the spheres is 100N, what is the force between them when the
distance is halved?

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?